![]() This is important because using the `=` (loose equality) operator can lead to unintended results due to type coercion when checking for null values. The example provided demonstrates how to use the `=` (strict equality) operator in JavaScript to perform a null check. To check a null value in JavaScript, use the equality operator ( ). While checking for an object in a JavaScript code, you may require a check for a null. You can easily check if a variable Is Null or Not Null in JavaScript by applying simple if-else condition to the given variable. It’s important to use the `=` (strict equality) operator instead of `=` (loose equality) to avoid type coercion, which can lead to unintended results when checking for null values. JavaScript null check is part of validating data in JavaScript. This will check if the `someVariable` is null and print the corresponding message to the console. By equality Operator (): By this operator, we will learn how to check for null values in JavaScript by the () operator. ![]() In JavaScript, to perform a null check, you can simply compare the value with `null` using the `=` operator, which checks both the value and the type. null is not an identifier for a property of the global object, like undefined can be. Approaches: There are many ways to check whether a value is null or not in JavaScript: By equality Operator () By Object.is () Function By the typeof Operator 1. The `=` (strict equality) operator can be used to compare a value with `null`, which checks both the value and type, avoiding any potential issues due to type coercion. In strict null checking mode the compiler requires every reference to a local variable of a type that doesnt include undefined to be preceded by an assignment. ![]() ![]() The Object.values() method takes an object. Generally, accessing values from deeply nested objects in JavaScript. To check if all the object properties are null in JavaScript, invoke the Object.values() method in your program. Checking for null values in JavaScript is an important part of programming. The nullish coalescing operator may be used after optional chaining in order to build a default value when no value is found.
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